CONTENTS. 



No. II. June, IS24. 



Page 



Art. XIX. — Monograph on the Cyprceidw^ a Faniilij of Tes- 

 taceous Mollusca. By Mr. John Edward Gray, 

 M.G.S. (continued.) 1 37 



AuT. XX. — An Inquiry respecting the true nature of In- 

 stinct, and of the Mental Distinction between Brute 

 Animals and Man. — Essay II. — An Examination of the 

 prevailing Division of the Brute Powers into Intellectual 

 and Instinctive, as presented, in some recent publications, 

 by the Rev. Dr. Fleming, and by M. Frederic Cuvier ; 

 including Strictures on the Theory of Habit proposed by 

 the latter : with Illustrations of the Specific Constitution 

 of the Brute Mind. By John Oliver French, Esq. 153 



Art. XXI. — Abstract of a Memoir on the Physiology of 

 Helix Pomatia; by B. Gaspard, M. D. With Notes, 

 by T. Bell, Esq. F.L.S. (concluded.) 174 



Art. XXII. — Some Observations on the Notnenclature of 

 Ornithology ; particularly with reference to the admis- 

 sion of New Genera. By N. A. Vigors, Jun. Esq. 

 A. M. F.L.S 180 



Art. XXIII. — Remarks on the Animal Nature of Sponges, 



By Thomas Bell, Esq. F.L.S 202 



Art. XXIV. — Conchological Observations, being an attempt 

 to fix the study of Conchology on a firm basis. By 

 Mr. John Edward Gra y, M.G.S 204 



Art. XXV. — Correction of the Characters of the Genus Bel- 

 lerophon, established by De Montfort, in his Conchylio- 

 logie. By M. Defrance 223 



